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saw5 [17]
3 years ago
10

HELP ASAP PLEASE AND THANKS

Mathematics
2 answers:
DerKrebs [107]3 years ago
7 0

Answer:

For the combination A, then B, then AB => 0.164%

For any combination (incl. B, AB, A or A, AB, B) => 0.984%

Step-by-step explanation:

You're looking for any combination of students which have the blood types A, B, AB. Any single one combination will have a probability that looks like the following:

Probability of A * Probability of B * Probability of AB

Let's convert the probabilities to decimal.

P(A) = 41/100 = 0.41

P(B) = 1/10 = 0.10

P(AB) = 1/25 = 0.04

Any ONE combination, e.g. (B, AB, A) or (A, AB, B), will thus have the probability

0.41 * 0.10 * 0.04 = 0.00164

Note: the following ONLY applies if you want to find the probability of ANY combination of A, B, AB. If you only want the one case where the first random student is A, the 2nd is B, the 3rd is AB, then the answer is 0.00164 = 0.164%

If we want to find the probability of EVERY case combined that has A, B, AB -> we need to answer the question: how many combinations are there?

Student 1 can be any of the 3 blood types.

For each of the blood types that student 1 can be, student 2 can be one of 2 other blood types.

Whatever the previous combination, student 3 can only be 1 blood type: the one remaining.

3 cases for Student 1, each case having 2 cases for Student 2, each having only 1 case for Student 3.

3 * 2 * 1 = 6

So 6 cases, where each probability is 0.00164

6 * 0.00164 = 0.00984 = 0.984%

Gnesinka [82]3 years ago
3 0
Well there is always help here
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Answer:

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Step-by-step explanation:

six less than seven times a number

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7 0
3 years ago
Can someone please help me?
Vladimir79 [104]

Answer:

<h3> ( - 1 , - 1 )</h3>

Option D is the correct option.

Step-by-step explanation:

y = - 2x - 3 → Equation ( i )

y = 3x + 2 → Equation ( ii )

Using elimination method

y + 2x = - 3

y - 3x = 2

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5x = - 5

Divide both sides of the equation by 5

\frac{5x}{5}  =  \frac{ - 5}{5}

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Again, Putting the value of x in equation ( ii ) in order t get the value of y

y = 3x + 2

plug the value of x

= 3  \times ( - 1) + 2

Any expression multiplied by ( - 1 ) equals it's opposite

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Calculate

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Therefore, The possible solution of the system is the ordered pair ( x , y )

(x \:, y \: ) =  ( - 1 \:, - 1)

-----------------------------------------------------------------------

Check if the given ordered pair is the solution of the system of equation

- 1 =  - 2 \times ( - 1)  - 3

- 1 = 3 \times ( - 1) + 2

Simplify the equation

- 1 =  - 1

- 1 =  - 1

Since all the equalities are true, the ordered pair is the solution of the system.

<h3>( x , y ) = ( - 1 , - 1 )</h3>

Hope this helps..

Best regards!!

7 0
3 years ago
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Step-by-step explanation:

6 0
2 years ago
Select the quadrant in which the terminal side of the angle falls.
Sedbober [7]

Answer:

The answer is below

Step-by-step explanation:

Select the quadrant in which the terminal side of the angle falls.

210° terminates in quadrant

-150° terminates in quadrant

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Solution:

The x and y axis divides the cartesian plane into four equal parts known as the four quadrants.

Angles between 0° and 90° are in the first quadrant, angles between 90° and 180° are in the second quadrant, angles between 180° and 270° are in the third quadrant while angles between 270° and 360° are in the fourth quadrant.

a) Since 210 degrees is between 180° and 270°, hence it terminates in the third quadrant.

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8 0
3 years ago
BRAINIEST AND YOU WILL GET 10 POINTS!
jenyasd209 [6]
1 - The value of p in the equation is p = 0.

2 - The simplified form of the equation is 3x = 1, the reason behind this is when you do the equation, you get x = 1/3. When you do the equation 3x = 1 you get x = 1/3 as well.

3 - The value of z in the equation is z = 13.

4 - In order to figure out what step he did something wrong on, we first need to solve the problem, the answer we will get is x = 2.
To do this the easy way, we can solve each step, and see what one wouldn't equal 2, which the step he did wrong is Step 2.
So, to do Step 2 correctly, it would be: Step 2 - 12x − 6 = 14 + 2x.
6 0
3 years ago
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